92results about How to "High dimensional consistency" patented technology

The invention provides an NC30Fe high-chromium nickel-based alloy pierced billet as well as a preparation method and application of the NC30Fe high-chromium nickel-based alloy pierced billet. The preparation method comprises the following steps: firstly, heating an NC30Fe high-chromium nickel-based alloy tube blank to a specific charging temperature, and perforating by utilizing a hot cross rolling perforation process; in the punching process, it is ensured that the dimensional tolerance and eccentricity of a pierced billet meet the requirements by strictly controlling the roller distance, the top temperature and the extension coefficient; and then, quenching treatment is carried out on the pierced billet subjected to perforation, so that the grain size is controlled to be within the range of grade 3 to grade 7, and the high-temperature strength and creep resistance of the material are improved. According to the preparation method disclosed by the invention, through introduction of a hot cross piercing process, the problems of more surface defects, large eccentricity and difficulty in grain control caused by a traditional hot extrusion process are solved, the yield is increased to 93% or above, and the surface smoothness and the dimensional precision are remarkably improved. The pierced billet is suitable for preparation of high-temperature corrosion-resistant and high-precision nickel-based alloy pipes in the fields of petroleum, chemical engineering, aerospace and the like, and has high application value.

The invention discloses a preparation method for controlling magnet performance through a forming process, and belongs to the technical field of sintered neodymium-iron-boron permanent magnet materials. The method comprises the steps that S1, an upper pressing head assembly moves upwards to a preset powder adding position on a mold, and then sintered neodymium-iron-boron powder is quantitatively added into the mold; s2, the upper pressure head assembly moves downwards to a preset micro-descending position on the mold; s3, the lower pressing head assembly moves downwards and moves to a preset pre-pressing position on the grinding tool, and the sintered neodymium iron boron powder in the mold is pre-pressed; s4, after pre-pressing of the sintered neodymium iron boron powder is completed, magnetizing orientation operation is conducted on the sintered neodymium iron boron powder in the mold; s5, after the magnetizing orientation operation is completed, the upper pressing head assembly and the lower pressing head assembly synchronously move towards the middle of the mold, and the sintered neodymium-iron-boron powder is subjected to bidirectional opposite pressing; and S6, after the sintered neodymium-iron-boron powder is pressed, demagnetization operation is carried out. The technical scheme is used for solving the problem that powder distribution in a die cavity is not uniform when neodymium iron boron powder is pressed and sintered.

The utility model relates to the technical field of chip packaging, and discloses an array column structure for chip packaging, which comprises a plastic package integration platform and an array column assembly embedded in the plastic package integration platform, the array column assembly comprises a plurality of guide columns, and at least one end of each guide column is provided with an electroplated layer; the lower surface of the plastic package integration platform is flush with the lower end face of the array column assembly, and the distance between the upper surface of the plastic package integration platform and the upper end face of the array column assembly is h1; or, the distance between the upper surface of the plastic package integration platform and the upper end face of the array column assembly is h2, and the distance between the lower surface of the plastic package integration platform and the lower end face of the array column assembly is h3; wherein h1 is greater than 0, h2 is greater than 0, h3 is greater than 0, h1 is greater than h2, and h1 is greater than h3; according to the array column structure for chip packaging provided by the utility model, the problems of high difficulty, low reliability and low efficiency of a single copper column in packaging and integration are solved.

The application provides a circuit breaker, relates to the technical field of switches, and can reduce the production cost of the circuit breaker and is easy to assemble. The circuit breaker comprises a shell, an indicating piece, a movable contact, a driving shaft and an elastic piece, and the shell is provided with a viewing window. The indicating piece is provided with an acting end and an indicating end, and the indicating end is provided with an opening indication mark and a closing indication mark. When the indicating piece is in a first position, the opening indication mark corresponds to the viewing window. When the indicating piece is in a second position, the closing indication mark corresponds to the viewing window. When the movable contact is in a contact position, the indicating piece is in the second position. When the movable contact is in a disengagement position, the indicating piece is in the first position. The driving shaft drives the movable contact to switch between the contact position and the disengagement position. The driving part of the driving shaft is in abutment with the acting end, and the indicating piece is switched from the first position to the second position. The two ends of the elastic piece are elastically applied to the shell and the indicating piece respectively, and are used for applying an action force close to the driving part to the acting end.

This utility model discloses a screw nut internal thread grinding machine, comprising: a bed, a fixed worktable on the front side of the bed, a headstock fixedly mounted on the left side of the worktable, and a movable center support on the right side of the worktable; a chuck for clamping the workpiece is mounted at one end of the headstock; a movable dual-axis worktable is mounted on the rear side of the bed, a movable grinding wheel head is mounted on one side of the dual-axis worktable, and a grinding wheel dresser is mounted on the other side; a retractable and rotatable grinding wheel grinding device is mounted at the front end of the grinding wheel head, and a grinding wheel drive device is connected to the grinding wheel grinding device. The bed of this utility model adopts a rectangular structure and is a grinding wheel head movable structure, which, compared with the traditional T-shaped structure machine tool with a movable worktable, has advantages such as high structural rigidity, fast dynamic response speed, good thermal stability, high machining accuracy, and small footprint.

The utility model discloses a front-overhang rear-lower swing arm structure which comprises a swing arm body. The swing arm mounting ball pin is formed at one end of the swing arm body, and the swing arm body is connected with a steering knuckle through the swing arm mounting ball pin; a shock absorber side lining installation portion is arranged at the position, close to the swing arm installation ball pin, of the swing arm body, and a lower fork arm and the swing arm body are assembled and fixed to the shock absorber side lining installation portion through a shock absorber side lining. The end, away from the swing arm installation ball pin, of the swing arm body is provided with an auxiliary frame side lining installation part, and the swing arm body and an auxiliary frame are assembled and fixed to the auxiliary frame side lining installation part through an auxiliary frame side lining. The swing arm is simple in structure, firm in installation, convenient to assemble, capable of being independently disassembled and replaced and good in maintainability; the labor cost and the tool input cost are reduced, and the comfort and the stability of whole vehicle driving are improved.

The invention discloses an efficient and low-cost production method of thin-specification and high-grade non-oriented silicon steel. The production method comprises the steps that the initial rolling temperature of hot rolling and finish rolling is larger than or equal to 950 DEG C, the finish rolling temperature is (830-880) + / -15 DEG C, and the coiling temperature is (600-650) + / -15 DEG C; acid continuous rolling, wherein a multi-rack acid continuous rolling unit is adopted for acid pickling and multi-pass cold rolling; normalizing a rolled hard board, wherein the normalizing temperature is (850-1000) + / -10 DEG C, and the tension in a normalizing furnace is 8-10N / mm < 2 >; performing single-stand finish cold rolling: performing finish cold rolling by adopting a single-stand rolling mill; and annealing, wherein the annealing temperature is 850-1050 DEG C, and a finished product with the thickness of (0.15-0.50) + / -0.003 mm is obtained. A specific process combination of normalizing after obtaining a rolled hard plate through acid continuous rolling and then carrying out single-rack finish cold rolling is adopted, so that the existing hot-rolled plate normalizing technology is replaced, and the unification of high efficiency, low cost and high quality is achieved.

The present application relates to the field of micro-droplet jet and inkjet technology, and particularly relates to an acoustic driving micro-droplet jetting method and device, which comprises: stably delivering a liquid to be jetted to a nozzle micro-hole assembly; generating an ultrasonic signal, which drives an ultrasonic transducer after power amplification; driving the resonant acoustic cavity nozzle through the ultrasonic transducer to form a stable sub-wavelength scale standing wave acoustic field in the cavity; using the acoustic radiation force to act on the liquid column at the end of the nozzle to realize the non-contact separation and directional jetting of the droplet; and moving the nozzle on the substrate through a multi-axis motion platform to realize the deposition of the droplet according to a predetermined track. The method and device avoid the nozzle blockage and other problems caused by the high viscosity or high solid content of the liquid in the traditional piezoelectric or electrohydrodynamic driving mode; can significantly improve the control accuracy of the droplet size and jetting speed, have excellent fluid adaptability and jetting stability, and are particularly suitable for the precise deposition and patterning jetting of complex fluids such as photoresist, metal paste and functional nanomaterials.

The invention discloses a front end framework left and right mounting support stamping system which comprises a progressive die, the progressive die comprises an upper die and a lower die, the upper die is located at the top of the lower die, a floating material guide block is arranged at one end of the upper die, and a material belt guide ruler used in cooperation with the floating material guide block is arranged at the corresponding position of the lower die. The other end of the lower die is provided with a product sliding groove and a waste sliding groove. By integrating floating material guiding and multi-station continuous stamping, automatic feeding, accurate positioning, multi-procedure synchronous machining and automatic separation of finished waste are integrated, a floating material guiding block of the upper die and a material belt guiding ruler of the lower die are matched at the feeding end to achieve lifting and transverse guiding of a material belt, and the automatic feeding, accurate positioning, multi-procedure synchronous machining and automatic separation of the finished waste are achieved. In the punching process, a guide hole used for accurate positioning in the whole process is punched at first, then a guide pin is used for hole pin inserting and positioning before feeding in each subsequent step, and therefore the accumulated feeding error is effectively restrained.

The utility model belongs to the technical field of dies, and particularly relates to a draft-free die for a synchronous pulley, which comprises a movable module, a fixed module is arranged on one side of the movable module, a surrounding structure is arranged on the movable module and comprises a turntable and a plurality of first guide grooves, the turntable is rotatably connected onto the movable module, and the first guide grooves are arranged on the turntable. The movable module is slidably connected with a plurality of sliding blocks, one end of each sliding block is fixedly connected with a first guide shaft, each first guide shaft extends into the corresponding adjacent first guide groove and is slidably connected with the rotating disc, the other end of each sliding block is fixedly connected with a check block, the adjacent check blocks abut against each other, and the fixed module is provided with a pushing structure; and during mold opening, the multiple stop blocks move away from the synchronous belt wheel, so that demolding of the synchronous belt wheel can be achieved without pattern draft, and high-precision die-casting forming of the synchronous belt wheel is achieved.

The utility model provides a circuit breaker, relates to the technical field of switches, and aims to solve the problems that a circuit breaker in the prior art cannot output electric arcs in time and a contact is easy to ablate. The circuit breaker comprises a shell and an arc isolating assembly, at least one arc extinguishing chamber is arranged in the shell, and air outlets corresponding to the arc extinguishing chambers are formed in the shell. And the arc isolating assembly corresponds to the arc extinguishing chamber. The arc isolating assembly is arranged at the air outlet and matched with the air outlet. The arc-isolating assembly comprises a first arc-isolating plate, an extension plate and a second arc-isolating plate which are sequentially connected end to end, and the surface where the first arc-isolating plate is located is parallel to the surface where the second arc-isolating plate is located. An included angle alpha is formed between the surface where the extension plate is located and the surface where the first flash barrier is located and is larger than 0 degree and smaller than or equal to 90 degrees. The second flash barrier is located on the side, away from the arc extinguish chamber, of the first flash barrier. Under the action of airflow generated in the breaking process of the circuit breaker, one end, far away from the first flash barrier, of the second flash barrier can swing relative to the first flash barrier.

The utility model relates to an adhesive tape punching tool which comprises a fixing frame, a cutter and a supporting block used for supporting the portion, needing to be cut, of an adhesive tape, the fixing frame is provided with two positioning holes allowing overflow edges to penetrate through, the fixing frame is provided with an embedded groove, the embedded groove penetrates through the upper side and the lower side of the fixing frame, and the cutter is arranged in the embedded groove. The groove bottom of the embedding groove is provided with two fixing holes allowing the adhesive tape body to penetrate through, the two fixing holes are in one-to-one correspondence and communicate with the positioning holes correspondingly, the supporting block is embedded in the embedding groove, the cutter comprises a cutting part and two trimming parts, the cutting part abuts against and slides to the groove bottom of the embedding groove, and the two trimming parts are arranged on the cutting part. The two trimming parts are fixedly connected to the two sides of the cutting part in a one-to-one correspondence mode and are perpendicular to the cutting part, and the trimming parts abut against the groove wall of the embedding groove. The trimming and cutting tool has the advantages that trimming and cutting procedures of the adhesive tape are integrated in the same tool, the operation process of pretreatment of the adhesive tape is simplified, and the working efficiency of trimming and cutting of the adhesive tape is improved.

The present application belongs to the technical field of valve stem precision manufacturing, and particularly relates to a valve stem manufacturing process. The valve stem manufacturing process provided by the present application adopts five-step axial cold extrusion step forming: S1, a cylindrical blank is extruded into a second blank with a lower end lower convex arc shape through a first die; S2, an arc necking section is formed through a second die, and a third blank with different upper and lower diameters is obtained; S3, a fourth blank with three sections of decreasing diameters is formed through twice taper necking of a third die; S4, the upper end is formed into an arc convex surface and a gradually expanding structure through extrusion of a fourth die, and a fifth blank is obtained; and S5, the target valve stem containing three stepped disc bodies and sunken tables, annular extended edges and other details is finally extruded through a fifth die. The valve stem manufacturing process of the present application controls material flow in steps, reasonably designs die cavity section structure to cooperatively control material flow, guarantees valve stem forming precision and quality, avoids stress concentration, and is suitable for batch production.

The invention relates to the technical field of wire harness sealing gaskets, in particular to an injection-molded wire harness sealing gasket and a process thereof.The injection-molded wire harness sealing gasket is characterized in that prefabrication and riveting molding of a terminal and a wire harness are completed firstly, and a terminal assembly with the wire harness is manufactured; preparing a sealing rubber material, and performing vulcanization molding to obtain a sealing gasket base body; then the terminal assembly and the sealing gasket base body are positioned and clamped, pre-injection molding of the sealing insert is completed, and a semi-finished product is obtained; positioning and fixing the semi-finished product, and carrying out vacuum injection molding to complete integral molding so as to obtain a crude product; and finally, carrying out post-treatment and performance detection, and obtaining a final finished product after the product is qualified. According to the process, the wire harness sealing gasket is integrally formed, the tolerance accumulation and leakage risks of a split process are eliminated, terminal deviation is avoided, the interface bonding force and the product reliability are improved, the service life is prolonged, and the production yield is increased.

The present application relates to a hub automatic polishing track generation method and device based on point cloud and template, first relying on hub geometric constraint to align real-time point cloud and template point cloud reference coordinate system and correct point cloud, then solving pose transformation matrix, adaptive mapping polishing track. Geometric constraint pre-locks matching optimization range, relieves single camera local point cloud and complete template cross-mismatch, normal offset defects, prevents grinding head overcut or burr residue. Pre-geometric correction offsets die casting deformation, millimeter-level positioning error, provides high-quality initial point cloud for pose solving, improves registration convergence stability, overcomes the problem of few features of hub smooth surface and easy failure of direct registration. The present application generates exclusive polishing track for each hub, replaces teaching robot fixed track blind punching, does not need artificial continuous debugging, improves batch workpiece polishing consistency, avoids artificial polishing dust noise, unstable quality and high labor cost.

The utility model discloses an anti-deformation refrigerator hinge bearing structure which comprises a hinge base, a hinge core, a positioning structure and an assembly fixing structure. A profiling reinforcing rib is arranged in the head area of the hinge base, so that the bearing strength of the hinge shaft part is enhanced; and the door body moving area is provided with a bent clearance part, so that friction interference with the refrigerator door body is avoided. The hinge core penetrates through the mandrel of the hinge seat and is fixedly connected with the hinge seat; and a pin shaft is arranged at the end part of the hinge core and is used for riveting and fixing the hinge core and the hinge seat. A positioning structure adopts a square positioning hole, so that the assembly precision is improved; the assembly fixing structure is provided with the hinge cover through cooperation of the stamping notch and the buckling piece. Through the profiling reinforcing ribs which are integrally punched and formed and the optimized structural design, the deformation resistance and the bearing strength of the hinge are remarkably improved, meanwhile, the friction loss is reduced, the assembly process is simplified, the production efficiency is improved, and the hinge is suitable for connecting multiple groups of refrigerator door bodies.

The invention discloses a steel pipe quenching cooling device and a use method thereof, and relates to the technical field of metal material heat treatment, the steel pipe quenching cooling device comprises a box body with an internal space, and the box body is provided with a plurality of detection openings communicated with the outside; the data acquisition module is arranged in the internal space, and the data acquisition module is provided with a plurality of interfaces used for plugging installation and electric connection of the sensor module; the plurality of sensor modules are respectively inserted into the corresponding interfaces and are electrically connected with the data acquisition module; and the sensor modules are provided with sensing ends facing the corresponding detection openings. The data acquisition module is positioned and mounted relative to the box main body, so that the interfaces are in one-to-one correspondence with the detection openings, and the sensing end is aligned with the detection openings and is communicated with the outside through the detection openings when the sensor module is inserted in place; a communication channel is arranged between each detection opening and the corresponding interface, the communication channel is located between the box body and the data acquisition module, a channel inner cavity is defined by the channel wall, and the two ends of the channel wall are connected with the detection openings and the interfaces in a sleeved mode respectively.

The utility model discloses a trimming tool for a lead of a surface-mounted device. The trimming tool comprises a support part, a tool bit part and a positioning part, the tool bit part is mounted on the support part; the support part comprises a base; the positioning part comprises a positioning frame; the positioning frame is mounted on a base of the support part; the positioning frame is provided with a limiting plate with a square hole; the cutter head part comprises a cutter head with an acute inclination angle; correspondingly, the base is provided with a tool edge groove, and the tool edge groove is matched with the tool bit. Guide arms are arranged on the two sides of the tool bit. According to the surface-mounted device lead trimming tool, leads on the same side of a component can be trimmed at a time, and bending deformation of the leads is reduced; meanwhile, the trimming size of the lead of the component is controlled, and the consistency is high; the structure is simple, positioning is accurate, and operation is convenient.

The invention discloses a chip fan-out type packaging method and a chip fan-out type packaging structure, and aims to overcome the defect that a chip deviates in the curing process. According to the invention, a first platform is provided with a first bonding layer, and the first bonding layer is provided with a packaging assembly; the packaging assembly comprises a chip, a cofferdam structure and a plastic packaging layer, the cofferdam structure is arranged on a first bonding layer, the chip is arranged in the cofferdam structure, the active surface of the chip is attached to the first bonding layer, the plastic packaging layer is arranged on the passive surface of the chip and the outer surface of the cofferdam structure, and the cofferdam structure is arranged on the outer surface of the cofferdam structure. The plastic packaging layer fills a gap between the chip and the cofferdam structure, and the chip is embedded and packaged in the plastic packaging layer. Through structural coupling of the thinned chip and the photoetching cofferdam, chip limiting and high-precision position keeping in the plastic packaging process are considered.

The utility model belongs to the technical field of battery forming, and particularly relates to a rubber ring forming device which comprises a punching lower die and a punching upper die, and the punching lower die is used for loading rubber sheets to be processed; the upper punching die is arranged above the lower punching die, and the moving path of the output end of the upper punching die passes through the lower punching die; wherein the punching upper die comprises an elastic limiting mechanism and a double-ring tool bit, the elastic end of the elastic limiting mechanism is used for elastically abutting against, limiting and fixing a rubber sheet located on the punching lower die, and an annular inserting groove with an opening back to the punching lower die is formed in the end, away from the elastic end of the elastic limiting mechanism, of the elastic limiting mechanism in a penetrating mode; the double-ring tool bit is detachably and concentrically inserted into the annular inserting groove, the double-ring tool bit is rapidly assembled and disassembled through the inserting groove, synchronous machining is completed through single-time clamping, and the equipment adjusting time is greatly shortened.

The invention relates to a manufacturing method of a multi-oil-wedge conical hybrid bearing, and relates to the technical field of mechanical manufacturing of hybrid bearings. Firstly, the outer conical surface, the small end face and the inner hole of the bearing are machined through turning, boring and other methods; roughly grinding an outer conical surface, a small end surface and an inner hole by utilizing a grinding clamping plate, and flatly grinding a large end surface; then lineation is conducted, and conical rib plates, rectangular rib plates, oil grooves and other characteristics are machined through a linear cutting method; then accurately grinding the outer conical surface, the small end surface and the inner hole, and accurately grinding the large end surface; and then linear cutting is performed to correct the characteristics of conical rib plates, rectangular rib plates, oil grooves and the like. When the design precision requirement is high, the outer conical surface and the small end face of the bearing continue to be subjected to ultra-precision grinding, an inner hole of the bearing is subjected to ultra-precision grinding through the shaft system assembly, the oil cavity depth is measured, and scraping and correction are conducted. The process route is simple and clear, and the use requirement for high machining precision consistency of the multi-oil-wedge oil cavity of the conical hybrid bearing can be met.

The utility model discloses an RTM (Resin Transfer Molding) forming mold of a carbon fiber product, which comprises a front mold plate provided with a forming groove and a rear mold plate provided with a forming table, and after the front mold plate and the rear mold plate are assembled, the forming groove and the forming table are matched to form a forming cavity; the forming groove comprises a product forming part and a leftover material forming part arranged on the periphery of the product forming part. The front mold plate is provided with a plurality of material pressing rods and a lifting driving device, and the lifting driving device is used for driving the material pressing rods to stretch out and retract from the end face of the leftover material forming part; according to the utility model, the stability and the reliability of product quality are improved, the forming period is shortened, the production efficiency is improved, and the dimensional accuracy and the consistency of products are ensured.

The invention discloses a hexagonal skirt trailer ball closed forging technology which comprises the following steps: S01, blanking: cutting a raw material into a plurality of blanks with the same length by using a cutting machine, S02, cogging: putting the blanks into cross wedge rolling equipment, rotating two rollers with wedge-shaped dies in the same direction, driving the blanks to rotate, rolling into a stepped shaft, controlling the rolling temperature to be 1150 + / -50 DEG C and the rolling time to be 2-3 hours, and rolling the stepped shaft into a blank; the stepped shaft is horizontally placed in a lower die body of a forming die, an upper die body moves downwards to be vertically locked with the lower die body, the left die body and the right die body extrude towards the center at the same time, closed forging of the trailer ball blank is completed, and the forming temperature is 1050 + / -50 DEG C. The process has the advantages that the process is reasonable in design and high in practicability, and the hexagonal skirt trailer ball forged through the process effectively solves the problems that a traditional open type forging process for the hexagonal skirt trailer ball is multiple in procedure, much in waste, low in yield, short in die service life, poor in dimensional stability and high in machining cost.

This invention relates to the field of industrial control technology, and more specifically, to a method for precise pressure adjustment in the injection molding holding process based on iterative learning control. The method includes: acquiring a reference holding pressure curve, an actual feedback pressure sequence, and injection molding holding control commands for the current holding stage; calculating thermal hysteresis characteristics characterizing changes in physical state; calculating a thermal drift evolution index characterizing the thermal drift rate; generating a nonlinear adaptive gain adjustment factor constrained within a safe range; and calculating and updating the injection molding holding control commands for the next holding stage. This invention more accurately reflects the comprehensive impact of changes in physical state, scientifically assesses the thermal drift rate and the difference between current and historical data, dynamically adapts to thermal drift to ensure control stability under different thermal conditions, effectively solves the problems of holding pressure overshoot, oscillation, and slow response, improves the dimensional consistency of injection molded products and the control accuracy of the holding process, and ensures production quality and efficiency.

The utility model relates to the field of motors, in particular to a rotor casing, an external rotor motor and an electronic fan, the rotor casing comprises a cylindrical outer casing and a shaft sleeve assembly coaxially arranged in the outer casing, and an accommodating cavity is formed in the shaft sleeve assembly and used for mounting a rotating shaft of a rotor; the shaft sleeve assembly comprises a shaft sleeve body and a connecting part, the connecting part is arranged on the surface of the shaft sleeve body and extends outwards in the radial direction of the shaft sleeve body, the connecting part is welded and fixed to one end of the outer shell, and the connecting part is arranged at the end, adjacent to the outer shell, of the shaft sleeve body; the connecting part is in an annular plate shape, and an inner ring of the connecting part is welded and fixed with the surface of the shaft sleeve body. The integral stretching forming mode of the rotor casing in the prior art is changed into welding and fixing through the outer casing, the shaft sleeve body and the connecting part, high die cost and working hours are saved, unit price is reduced, and the rotor casing is high in product size consistency, uniform in wall thickness and small in unbalance amount.

The present invention relates to the technical field of automobile lamp molding, specifically to a stamping and molding device for automobile lamp components, including a base, an L-shaped support frame and an operating panel located below the L-shaped support frame are fixedly installed on the upper end surface of the base, and a limiting mechanism for synchronously limiting a plurality of small metal brackets is provided on the operating panel. The present invention realizes the simultaneous loading and limiting fixation of a plurality of small metal brackets through the coordinated use of the limiting mechanism, the fixing mechanism and the actuator, thereby reducing the loading and unloading time of a single product, and simultaneously fixing and stamping a plurality of small metal brackets with the support of a single driving force, thereby reducing equipment costs and improving space utilization efficiency, while also ensuring that each bracket receives the same stamping force at a precise position, greatly improving the dimensional accuracy, consistency and quality of the product.

The application relates to the field of metal piece stamping, and discloses a negative angle shaping and delay pressure maintaining composite structure for electronic product thin-wall metal piece stamping, which comprises a stamping machine base, the top of the stamping machine base is fixedly connected with a bottom die support plate. The hinged points of the curved lever, the second connecting rod and the third connecting rod are in the same straight line through the transmission mechanism for driving the movement of the curved lever, the mechanism reaches the dead point position, at this time, the dead point mechanical self-locking characteristic is utilized, the punch can keep stable pressing pressure on the workpiece without the need of continuous external power input, delay pressure maintaining is realized, material springback is effectively inhibited, the shape and size stability of the product is ensured, and the pure mechanical self-locking structure avoids the pressure fluctuation problem caused by system leakage in the traditional hydraulic or pneumatic pressure maintaining mode, and the safety and reliability of the equipment are improved.

The utility model discloses a lithium battery shell stamping die device with cleaning function belongs to stamping die technical field, include: upper die plate and lower die plate, set up the board to set up the board bottom end is equipped with male module, the lower die plate upper end is equipped with the bottom plate, the utility model discloses, when lithium battery shell stamping die device operation, cleaning brush can real -time sweep the dust and chippings of convex module surface attachment, and dust absorption groove and dust absorption hole are through the negative pressure effect and rapidly absorb dust chippings etc, realize the seamless link of cleaning action, not only cover the traditional device difficult to reach corner area, more through the dual effect of dynamic cleaning and static adsorption, greatly reduce the interference of tiny particle to die precision, make lithium battery shell in the stamping process can keep higher size consistency and surface finish, so that the lithium battery shell stamping die device with cleaning function uses the practicality better.

This invention relates to the field of new energy vehicle motor manufacturing, and discloses a milling control system for the rear end cover of a new energy motor, including a central control module, a positioning and detection module, an environmental preprocessing module, a vision and laser detection module, a milling execution module, and a data storage module. The positioning and detection module determines the clamping state through both air static pressure values ​​and fluctuation rates; the environmental preprocessing module cleans the workpiece surface before detection using a directional air cutter and a protective shutter; the central control module generates tool compensation parameters based on collected geometric features, combined with a thermal error model and historical machining trends; the milling execution module triggers a spindle speed fluctuation strategy based on the load current variance and executes cutting. This invention employs a closed-loop control logic of semi-finishing, cleaning, measurement, compensation, and finishing, solving the impact of clamping deformation, environmental interference, and cutting chatter on machining accuracy, and improving the dimensional consistency of the finished product.